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She's most likely going to back up harder onto your dick. The likelihood of you sneaking up on a wild Ninetales to grab all 9 tails at once is slim and if you've gotten a fistful of them, stands to reason your relationship has grown past the mere trainer/pokémon dynamic to something more intimate.
Else she's going to curse you to life unnaturally extended, to continue to be her lover till her time comes.